sustainable soil solutions

Transcription

1 sustainable soil solutions

2 EPA approved SUEZ and Ventia have partnered to develop a contaminated soil processing facility at SUEZ s Taylors Road smart cell in Dandenong South, 45kms from the Melbourne CBD. SUEZ is a leader in the waste and resource recovery industry and owns and operates Victoria s only landfill licenced to receive category B solid Prescribed Industrial Waste. meets sustainability & regulatory requirements Ventia is a specialist remediation services provider with particular experience in the application of thermal treatment technology. Ventia has successfully completed over 140 remediation projects over 20+ years including Australia s largest and most complex environmental projects. reuse solution with zero residues 2

3 low cost solution accepts material 24 hours a day, 5 days a week Using the latest in thermal desorption and stabilisation technologies, the SUEZ Ventia Contaminated Soil Processing Facility in Victoria offers a comprehensive solution for the treatment and immobilisation of contaminated soils, protecting the health of the community and minimising impact on the environment. By collocating the facility at Taylors Road smart cell, the new SUEZ Ventia Contaminated Soil Processing Facility provides a state-ofthe-art, complete resource recovery and management solution for contaminated soils in Victoria. safe and proven process 3

4 Contaminated soil is soil that has been impacted with hazardous chemicals as the result of a wide array of activities including: chemical manufacturing, gasworks, tanneries, port and rail operations, paper manufacturing and more. These activities have generated legacy sites that contain contaminated soils. The contaminants are either organic or inorganic substances. the SUEZ Ventia Contaminated Soil Processing Facility provides a comprehensive solution to both organic and inorganic contamination The levels of the contaminants in the soil determine how severely contaminated the soil is. Category A contains the highest level of contaminants, with lower levels found in Categories B and C, respectively. The SUEZ Ventia Contaminated Soil Processing Facility uses a range of processes and technologies to treat both organic and inorganic contaminants across all categories of soil contamination. 4

5 types of contaminants in soil organic oils tars petroleum residues pesticides munitions inorganic mercury lead arsenic chromium 5

6 The SUEZ Ventia Contaminated Soil Processing Facility uses thermal desorption technology and cement stabilisation to treat both organic and inorganic soils. what happens to organic contaminants? Thermal desorption uses heat to vaporise organic contaminants into a gas stream. The soil is converted into clean fill and can be beneficially reused. The gas stream is treated to convert the organic contaminants into steam and Carbon Dioxide, as well as simple salts that are blended back in with the soil. 6

7 It is the only facility in Australia to treat and immobilise all contaminated wastes on-site without producing residues. what happens to inorganic contaminants? Stabilisation immobilises inorganic contaminants by mixing binding agents (such as cement and lime) in with the soil to prevent leaching This reduces the contaminant s leachability, making it less dangerous to human health and the environment. The end product requires long term management either back on the source site or in a landfill such as SUEZ s smart cell. 7

8 thermal desorption how it works SOIL Soil Pre-treatment Thermal Oxidiser Secondary Treatment Unit (STU) 1 Multi-clone 3 Rotary Dryer Primary Treatment Unit (PTU) 2 FINES Natural Gas Natural Gas SOIL STEAM Baghouse 7 5 FINES Pug Mill Dust Screw Clean Soil SCRUBBER PURGE WATER (FOR SOIL COOLING) 8

9 4 Rapid Gas Cooling 1 Soil is screened and crushed to produce a uniform feed 2 Soil is heated to around 450 degrees Celsius to separate contaminants from the soil 3 The desorbed hydrocarbon gases, heated to above 930 C, are converted to carbon dioxide and water Atmosphere 4 The converted gases are rapidly cooled to (i) control reformation and (ii) allow particulate removal 5 A fabric filter baghouse allows particulate removal from the gas stream. The fines are returned to the pugmill 6 The acid scrubber acts as a final polishing step to the gas stream by neutralising the acid gases to produce salts 6 7 In the pugmill fines are recombined and the product soil is cooled using scrubber water Scrubbing (Neutralisation) Solids Gases Water 9

10 The SUEZ Ventia Contaminated Soil Processing Facility provides a unique market offering as the only facility in Australia that can treat both organic and inorganic contaminated soils with zero residues by sending residual waste to an on-site smart cell. clean soil is returned to the source site or reused elsewhere In the absence of demand, all treated and immobilised products can also be sent to the Taylors Road smart cell, where cleanfill is beneficially reused as top-dressing and unrecoverable waste is converted into electricity. Stabilised inorganic contaminated soils may also be placed into the cell so that any on-going leaching is captured and managed appropriately. 10

11 1. The Process Treatment Building receives and stores waste streams prior to the treatment process. 2. The Emissions Control System ventilates the Process Treatment Building and ensures no odours or other emissions are released to the surrounding environment. 3. The Thermal Desorption Plant enables contaminants to be vaporised from a solid matrix and transferred into the gas stream. 4. The Treated Soil Sheds are a stockpile area for soils that have been stabilised or treated via the Direct Thermal Desorption (DTD) plant. SPF Aspect Soil Acceptance and Materials Tracking Soil Acceptance Hours of Operation Thermal Plant Operations Thermal Plant Manufacturer Thermal Plant Nameplate Capacity Maximum Treatment Capacity Storage Capacity Parameters Soil receival over existing SUEZ certified weighbridge and materials tracking system. All loads pre-booked and accepted for delivery via analytical results prior to arriving at site. Monday to Friday: 6.00 am to 6.00 pm Saturday: 6.00 am to 3.00 pm Sunday: 9.00 am to 4.00 pm 24 hours, 7 days per week ASTEC Industries Inc. 15 tonnes per hour 2,500 tonnes per week (7 days, 100% availability) 10,000 tonnes 11

12 This service is only available in Victoria. Printed on 100% recycled paper created entirely from post consumer waste, using vegetable oil based inks and an alcohol-free ISO certified printing process. SUEZ Australia & New Zealand Level 3, 3 Rider Boulevard RHODES NSW 2138 Australia Ventia 25/37 Huntingdale Rd BURWOOD VIC 3125 Australia Contacts John Lucas Technical Marketing Manager SUEZ Ventia Joint Venture Phone +61 (0) john.lucas@ventia.com.au Greta Gnanendran Major Accounts Manager Infrastructure SUEZ Recycling & Recovery Australia Phone +61 (0) greta.gnanendran@suez.com 03329